New York City Mayor Bill de Blasio lashed out at his former Democratic rival, South Bend, Indiana, Mayor Pete Buttigieg, on following Bernie Sanders' Nevada primary win.
"Try to not be so smug when you just got your ass kicked," de Blasio tweeted at Buttigieg, who finished third in the state.
De Blasio earlier in February endorsed Sanders' bid for the Oval Office.

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New York City Mayor Bill de Blasio didn't have anything kind to say about former South Bend, Indiana, Mayor Pete Buttigieg on Saturday night, sending a series of tweets in defense of his endorsed candidate Sen. Bernie Sanders who cemented his frontrunner status after winning in Nevada's Democratic caucuses.
Following his third-place finish behind Sanders and Biden in the Nevada race, the third major contest of the 2020 election, Buttigieg condemned the Vermont senator and his supporters.
"I believe that we can bring an end to corporate recklessness and bring balance to our economy by empowering workers, raising wages, and insisting that those who gain the most must contribute the most in order to keep the American Dream going forward," Buttigieg said. "But that is different from Sen. Sanders' vision of capitalism as the root of all evil, that would go beyond reform and reorder the economy in ways most Democrats — not to mention most Americans — don't support."
The New York City mayor De Blasio, who dropped his "longshot" presidential bid last September and earlier in February announced his endorsement for Sanders' White House bid, said that Buttigieg didn't "understand the moment" Sanders "has built," adding it "reflects the true values" and "hope of working people in America."
"They simply want a country that puts working people first," de Blasio added. "Your critique tonight speaks for the American elite, not the majority."
As Vox noted, entrance polls conducted at Saturday's Nevada caucus indicated that both Buttigieg and Minnesota Sen. Amy Klobuchar performed poorly among the state's Black population, which make up 11% of the caucus-goers in the state.
De Blasio pointed to Buttigieg's low support among racial minorities, directing the 38-year-old president hopeful to "show some humility."
"And hey @PeteButtigieg, try to not be so smug when you just got your ass kicked," de Blasio tweeted Saturday night. "You know how we form a winning coalition to beat Trump? With a true multi-racial coalition of working Americans: something @BernieSanders has proven he can do + you haven't."
The Buttigieg campaign has not returned a Business Insider request for comment.

.@PeteButtigieg, you clearly don’t understand the movement @BernieSanders has built. It reflects the true values + hope of working people in America. They simply want a country that puts working people first. Your critique tonight speaks for the American elite, not the majority — Bill de Blasio (@BilldeBlasio) February 23, 2020

Saturday's results among Black Americans in Nevada could spell trouble in future states
Buttigieg, who has continued to struggle to gain traction with black voters, ended up receiving about 2% of the African American vote in Nevada, Vox reported. Klobuchar received about 3%, according to the report.
As the primary leaves Nevada, where a Latino support helped Sanders win big, and heads to South Carolina where the black electorate make up a key voting bloc, trailing candidates are ramping up support among African Americans who make up about 27% of the population in the state, according to US Census data.
A recent Winthrop University poll of South Carolina voters found that Buttigieg had just about 1% of support among African Americans there. Former Vice President Joe Biden, who's staked his campaign on support from diverse states and black voters, had the majority of American American support – 31%, according to the poll, which had a margin-of-error of 5.9 percent. Sanders had 17% of support in that poll among African American voters.
South Carolina Rep. James Clyburn said Sunday on ABC's "This Week" that his state's electorate might not support someone who calls himself a socialist, referring to Sanders, a democratic socialist.
"I do believe it will be an extra burden for us to have to carry," Clyburn said. "This is South Carolina, and South Carolinians are pretty leery about that title socialist."
De Blasio had dismissed similar criticisms of Sanders after Nevada.
"Purveyors of Conventional Wisdom are telling us tonight that @BernieSanders can't be elected President because he's different," de Blasio said in a final tweet Saturday night. "Just like they said about Donald Trump. Just like they said about Barack Obama. The truth: you CAN'T be elected in America today UNLESS you're different."
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Former Vice President Joe Biden has won the South Carolina primary, Decision Desk HQ projects.
Biden's...

Former Vice President Joe Biden has won the South Carolina primary, Decision Desk HQ projects.
Biden's victory also marks the first time the former vice president has won a primary between his three presidential runs in 1988, 2008, and now, 2020.
Biden's South Carolina win keeps his campaign viable and afloat for now but won't guarantee big wins on Super Tuesday.
Follow along with live South Carolina results here.
Visit Business Insider's homepage for more stories.
Former Vice President Joe Biden has won the South Carolina Democratic primary, Decision Desk HQ projects. Follow along with live South Carolina results here.
Biden's victory marks the first time the former vice president has won a primary between his three presidential runs in 1988, 2008, and now, 2020.
Decision Desk HQ estimates that Biden will pick up at least 16 of South Carolina's 54 pledged delegates based on the results so far.
Biden's South Carolina win keeps his campaign afloat for now but won't guarantee big wins on Super Tuesday
Biden came in fourth place in the chaotic Iowa caucuses and fifth place in the New Hampshire primary. While Biden had a slight rebound with a second-place finish in Nevada, he made clear that the future of his campaign would hinge on a South Carolina victory.
For most of the 2020 primary cycle, Biden led the polls by a huge margin in South Carolina due to his previously insurmountable lead among African-American voters, who make up about 60% of the Democratic electorate in the state.
Biden successfully appealed to black voters by tapping into voters' strong desire to defeat Trump, positioning himself as the most likely to defeat the president in a general election. The problem with the strategy, however, is that betting a candidacy on electability actually requires winning elections.
Biden's electability case took a serious hit in the first three contests, where he came in fourth place in Iowa, fifth place in New Hampshire, and second place far behind Sanders in Nevada, a diverse state with a strong working-class base that Biden hoped would deliver a much-needed victory for his campaign.
Amid his losses in Iowa and New Hampshire, Biden has been hemorrhaging support among black voters nationwide to Sanders and billionaire former Mayor Mike Bloomberg. While Bloomberg isn't on the ballot in South Carolina, he's poured half a billion dollars into TV, radio, and digital ads, many of which explicitly target black voters in key Super Tuesday states, and shot up in the polls within in a matter of months as a result.
But Biden's base in South Carolina, including black voters, stood behind him on election day.
In an NBC/Marist College poll of South Carolina registered voters conducted February 18-21, Biden led among African-American voters with 32% supporting him compared to 22% for Sanders, 18% for Steyer, and 13% undecided with all other candidates in single-digits.
And as the Washington Post's Dave Weigel noted on Wednesday, South Carolina polls in past cycles have often undershot the full extent of candidates' support among African-Americans.
Some caution about SC polling: It often under-rates the candidate with support from older black voters.Final SC poll margin in 2008: Obama +12Actual margin: Obama +29Final poll margin in 2016: Clinton +28Actual margin: Clinton +48 — Dave Weigel (@daveweigel) February 26, 2020
Three days before the primary, Biden received a crucial endorsement from House Majority Rep. Whip Jim Clyburn, the most senior African-American lawmaker in the House and by far the most influential figure in South Carolina Democratic politics.
Preliminary South Carolina exit polls conducted by Edison Research indicate that Clyburn's endorsement contributed at least somewhat to Biden's big week, with 47% of voters saying Clyburn backing Biden was "an important factor" in who they decided to vote for.
Going into Super Tuesday, Biden is projected by FiveThirtyEight to earn the most delegates in several states but is squeezed on one side by Sanders' electoral momentum and sustainable base of grassroots fundraising, and by Bloomberg's astronomical ad spending and ground presence in Super Tuesday states on the other, still leaving him in a precarious position going forward.
As The New York Times recently reported, Biden's struggles with fundraising have left his ground game and field organizing woefully inadequate in key Super Tuesday states including California, where his campaign has just one field office.
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Joe Biden has won the South Carolina primary, Decision Desk HQ projects.
Sen. Bernie Sanders had tied or outright won the first three contests of the 2020 primary race so far, making this a crucial victory for Biden.
Polls closed at 7 p.m. Eastern Time, follow along live results here.
Visit Business Insider's homepage for more stories.
Live South Carolina primary results:
We called the race for Biden shortly after polls closed – follow along live results here.
Decision Desk HQ estimates that Biden will pick up at least 16 of South Carolina's 54 pledged delegates based on the results so far.
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What's at stake in the primary?
South Carolina accounts for 54 delegates, or a relatively small share of just 1.4% of all the pledged delegates allocated throughout the nomination process. But the primary holds disproportionate status in the Democratic nomination process as the first state with a predominately African-American electorate to vote.
Of South Carolina's 54 national pledged delegates:
35 pledged delegates are allocated proportionally between the state's seven congressional districts.
12 at-large and 7 PLEO (party leader and elected official) delegates will be decided and allocated based on the results of the statewide popular vote.
Like in most other states, candidates must break 15% of the vote in a given congressional district or voting area in South Carolina to win any delegates at all.
So far, only Sanders, former Vice President Joe Biden, and Tom Steyer have consistently polled above or near the statewide delegate threshold, but other candidates still have a shot at picking up district-level delegates.
As the last contest before Super Tuesday on March 3, during which fifteen states and territories will vote to allocate 35% of all the delegates to the convention, South Carolina will be a crucial test for all non-Sanders candidates to prove their campaigns are viable.
DELEGATE COUNT: Here's who's winning the race for the 2020 Democratic nomination
Who does the polling say is ahead?
For most of the 2020 primary cycle, Biden has topped the polls by a huge margin in South Carolina due to his significant lead among African-American voters, who make up about 60% of the Democratic electorate in the state.
Biden successfully appealed to black voters by tapping into their strong desire to defeat Trump, positioning himself as the most likely to defeat the president in a general election. The problem with the strategy, however, is that betting a candidacy on electability actually requires winning elections.
Biden's electability case took a serious hit in the first three contests, where he came in fourth in Iowa, fifth in New Hampshire, and second place far behind Sanders in Nevada, a diverse state with a strong working-class base that Biden hoped would deliver a much-needed victory for his campaign.
Amid his losses in Iowa and New Hampshire, Biden has been hemorrhaging support among black voters to Sanders and billionaire former Mayor Mike Bloomberg. While Bloomberg isn't on the ballot in South Carolina, he's poured half a billion dollars into TV, radio, and digital ads, many of which explicitly target black voters in key Super Tuesday states, and shot up in the polls within in a matter of months as a result.
In the Quinnipiac national poll conducted in early December, for example, Biden held 51% of black voters' support compared to 13% for Sanders and 0% for Bloomberg. But in the latest Quinnipiac national poll released on February 10, Biden's support among black voters plummeted to 27%, with Bloomberg's support rising to 22% compared to 19% for Sanders.
The day before the South Carolina primary, Biden polled at 37% on average compared to 18% for Sanders, 13% for Steyer, 8% for former Mayor Pete Buttigieg, 7% for Sen. Elizabeth Warren, and 4% for Sen. Amy Klobuchar in FiveThirtyEight's tracker of South Carolina polls.
In an NBC/Marist College poll of South Carolina registered voters conducted February 18-21, Biden also leads among African-American voters with 32% supporting him compared to 22% for Sanders, 13% for Steyer, and 13% undecided with all other candidates in single-digits.
Squeezed on both sides by Bloomberg's astronomical campaign spending and Sanders' highly effective organizing in communities of color combined with momentum from three victories so far, Biden's performance in South Carolina will either make or break his campaign.
A strong victory will allow him to justify staying in through Super Tuesday, but a loss to Sanders in four states in a row with markedly different electorates would all-but-obliterate his electability case.
In the days leading up to the primary, Biden got a last-minute boost with the powerful endorsement of House Majority Whip Rep. Jim Clyburn, the most senior black lawmaker in the House and most influential Democratic politician in South Carolina.
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